|
|||||
|
|
| 氰霜唑的光降解研究 | |
| 引用本文： | 韩耀宗,廖晓兰,刘毅华,吴慧明,朱国念.氰霜唑的光降解研究[J].农业环境科学学报,2009,28(1). |
| 作者姓名： | 韩耀宗 廖晓兰 刘毅华 吴慧明 朱国念 |
| 作者单位： | 1. 湖南农业大学生物安全科技学院,湖南长沙410128;株洲白蚁防治管理所,湖南株洲412000 2. 湖南农业大学生物安全科技学院,湖南长沙,410128 3. 浙江大学农药与环境毒理研究所,浙江杭州,310029 |
| 摘 要： | 采用高效液相色谱法研究了10%氰霜唑悬浮剂在自然光照和黑暗条件下,在水溶液中和黄瓜植株叶片上的消解动态.结果表明,在自然光照下氰霜唑在黄瓜植株叶片上消解的半衰期为63.6 h,而黑暗处理下消解不明显.在室内试验条件下,研究了不同pH值、温度、光源和光强等因子对氰霜唑光降解的影响:在pH值分别为4.96、7.02、9.56缓冲溶液中,其半衰期分别为167.7、102.4和64.0 min,光解速率随着pH值升高而加快;在pH值为4.96的缓冲溶液中,在15℃、25℃和35℃时,其光解半衰期为368.7、167.7和112.5min.在3 700、7 600和12 300Ix的模拟自然光(氙灯)光强下,其半衰期分别为962.7、167.7和120.1 min,说明氰霜唑的降解速率与光强和温度呈正相关关系.氰霜唑在pH值为4.96的缓冲溶液在紫外光(254nm)下的半衰期为53.5 min. |
| 关 键 词： | 氰霜唑 光降解 pH值 氙灯 |
The Photolysis of Cyazofamid |
|
| HAN Yao-zong,LIAO Xiao-lan,LIU Yi-hua,WU Hui-ming,ZHU Guo-nian.The Photolysis of Cyazofamid[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2009,28(1). | |
| Authors: | HAN Yao-zong LIAO Xiao-lan LIU Yi-hua WU Hui-ming ZHU Guo-nian |
| Institution: | 1.The Academy of Bio-Safety and Scientist Technology;Hunan Agriculture University;Changsha 410128;China;2.Institute of Pesticide and Envionmental Toxicology;Zhejiang University;Hangzhou 310029;3.Zhuzhou Termite Control Institute;Zhuzhou 412000;China |
| Abstract: | The photolysis of pesticide cyazofamid was studied under sunlight and darkroom in solvents and on cucumber leaves. The degrada- tion rate was measured through HPLC. The results showed that the half-lives of cyazofamid in sunlight was 63.6 h, and the pesticide was sta- ble in the darkroom. Then the effect of different factors, which included pH, temperature, light resource and the intension of light on the pho- tolysis of cyazofamid were investigated in the lab condition. The results also showed that the hal... |
| Keywords: | cyazofamid photodegradation pH xenon lamp |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《农业环境科学学报》浏览原始摘要信息 | |
| 点击此处可从《农业环境科学学报》下载免费的PDF全文 | |